Develop D 16G Service Manual
DEVELOP
SERVICE MANUAL & OPTIONS
D 16G
4986-7991-00
INDEX (Field Service)
GENERAL
MECHANICAL/ELECTRICAL
MAINTENANCE
DIS/REASSEMBLY,
ADJUSTMENT
CONTROL PANEL/SERVICE
MODE DESCRIPTIONS
TROUBLESHOOTING
CONTENTS
GENERAL
1. SPECIFICATIONS ...........................................................................................G-1
(1) Main Unit ..........................................................................................G-1
(2) GDI Printer Function ........................................................................G-3
2. PRECAUTIONS FOR INSTALLATION ............................................................G-4
2-1. Installation Site .........................................................................................G-4
2-2. Power Source ...........................................................................................G-4
3. PRECAUTIONS FOR USE ..............................................................................G-5
3-1. To Ensure the Printer is Used in an Optimum Condition .........................G-5
3-2. Operating Environment ............................................................................G-5
3-3. Power Requirements ................................................................................G-5
4. HANDLING OF THE CONSUMABLES ............................................................G-6
5. MISCELLANEOUS PRECAUTIONS ................................................................G-6
6. PARTS IDENTIFICATION ................................................................................G-7
MECHANICAL/
ELECTRICAL
1. COMPONENTS LAYOUT ................................................................................M-1
2. COPY PROCESS ............................................................................................M-2
3. PAPER PATH ..................................................................................................M-4
4. DRIVE SYSTEM ..............................................................................................M-5
5. OPERATING SEQUENCE ...............................................................................M-6
5-1. Print Start Sequence ................................................................................M-6
(1) When the pre-start control is not provided .......................................M-6
(2) When the pre-start control is provided .............................................M-7
5-2. Print End Sequence .................................................................................M-7
6. IC (IMAGING CARTRIDGE) SECTION ...........................................................M-8
6-1. Overview ..................................................................................................M-8
6-2. PC Drum ..................................................................................................M-10
6-3. Developing System ..................................................................................M-11
6-4. Detection of Toner Cartridge ....................................................................M-12
(1) Installation detection ........................................................................M-12
(2) Interchangeability detection .............................................................M-12
(3) Toner Near Empty and Toner Empty Detection ...............................M-12
7. DRUM CHARGE ..............................................................................................M-14
(1) Overview ..........................................................................................M-14
8. IR SECTION .....................................................................................................M-15
8-1. Image Data Processing ............................................................................M-15
8-2. Exposure Components Section ................................................................M-16
8-3. Scanner Drive Mechanism .......................................................................M-17
(1) Scanner Drive Mechanism ...............................................................M-17
8-4. Scanner Motor Drive Control ....................................................................M-17
9. PRINT HEAD (PH) ...........................................................................................M-18
9-1. Construction .............................................................................................M-18
9-2. Laser Exposure Process ..........................................................................M-19
i
9-3. Laser Emission Timing ............................................................................ M-20
9-4. Laser Emission Area ............................................................................... M-21
(1) Main scanning direction ................................................................... M-21
(2) Sub-scanning direction .................................................................... M-21
10. PAPER TAKE-UP SECTION ........................................................................... M-22
10-1.Tray 1 ...................................................................................................... M-22
(1) Paper take-up mechanism .............................................................. M-22
(2) Double feed preventive mechanism ................................................ M-23
(3) Paper empty detection .................................................................... M-23
(4) Paper take-up retry function ............................................................ M-23
11. IMAGE TRANSFER ......................................................................................... M-24
11-1.Overview ................................................................................................. M-24
12. FUSING UNIT .................................................................................................. M-25
12-1.Overview ................................................................................................. M-25
12-2.Fusing Temperature Control ................................................................... M-26
(1) Temperature changes
(plain paper having a length of 186 mm or more) ........................... M-26
(2) Temperature control ........................................................................ M-26
(3) Temperature control mode .............................................................. M-27
(4) Printing temperature by paper type
in different temperature control modes ........................................... M-27
(5) Fusing temperature protect control ................................................. M-28
13. PAPER EXIT ................................................................................................... M-29
13-1.Paper Exit Mechanism ............................................................................ M-29
14. MISCELLANEOUS .......................................................................................... M-30
14-1.Cooling of the Printer Interior .................................................................. M-30
14-2.Original Cover Open/Close Detection Mechanism .................................. M-31
MAINTENANCE
1. MAINTENANCE SCHEDULE .......................................................................... E-1
1-1. Guidelines for Life Specifications Values by Unit .................................... E-2
(1) Life Specifications Values ............................................................... E-2
2. REPLACEMENT/CLEANING OF PARTS ....................................................... E-3
(1) Cleaning of the Paper Take-Up Roll ................................................ E-3
(2) Replacement of the Paper Take-Up Roll ......................................... E-3
(3) Replacement of the Image Transfer Roller ..................................... E-4
3. REPLACEMENT OF UNITS ............................................................................ E-5
(1) Replacement of the Toner Cartridge ............................................... E-5
(2) Replacement of the Drum Cartridge ................................................ E-7
(3) Replacement of the Fusing Unit ...................................................... E-8
DIS/REASSEMBLY,
ADJUSTMENT
1. SAFETY INFORMATION ................................................................................ D-1
1-1. Laser Safety ............................................................................................ D-1
1-2. Internal Laser Radiation .......................................................................... D-1
1-3. Laser Safety Label .................................................................................. D-4
1-4. Laser Caution Label ................................................................................ D-4
ii
1-5. Precautions for Handling the Laser Equipment ........................................D-5
2. PRECAUTIONS FOR DISASSEMBLY/ADJUSTMENTS .................................D-6
2-1. Parts That Must Not be Touched .............................................................D-6
(1) Red Painted Screws ........................................................................D-6
(2) Variable resistors on board ..............................................................D-6
(3) Other Screws not Marked with Red Paint ........................................D-6
3. DISASSEMBLY/REASSEMBLY ......................................................................D-7
3-1. Identification of Exterior Parts and Removal Procedures for Them .........D-7
3-2. Removal of Circuit Boards and Other Electrical Components .................D-9
(1) Removal of the Controller/Mechanical Control Board ......................D-10
(2) Removal of the Control Panel ..........................................................D-10
(3) Removal of the Interface Board .......................................................D-11
(4) Removal of the Power Unit ..............................................................D-12
(5) Removal of the High Voltage Unit ....................................................D-14
3-3. Removal of Units ......................................................................................D-15
(1) Removal of the IR Unit .....................................................................D-15
(2) Removal of the PH Unit ...................................................................D-16
3-4. Disassembly of the Image Reading Section ............................................D-18
(1) Removal of the Original cover set sensor ........................................D-18
(2) Removal of the Upper Cover Assy. (Original Glass) ........................D-18
(3) Removal of the Scanner Motor ........................................................D-18
(4) Removal of the Scanner Assy. .........................................................D-19
(5) Removal of the Timing Belt ..............................................................D-20
3-5. Disassembly of the Main Drive Section ....................................................D-21
(1) Removal of the Main Motor ..............................................................D-21
(2) Removal of the Paper Empty Sensors .............................................D-21
(3) Removal of the Paper Take-Up Solenoid ........................................D-23
(4) Removal of the Paper Take-Up Clutch Gear ...................................D-24
(5) Removal of the Torque Limiter .........................................................D-25
(6) Disassembly of the Fusing Unit .......................................................D-26
4. ADJUSTMENTS ...............................................................................................D-29
4-1. Electrical/Image Adjustment .....................................................................D-29
(1) Accessing the Service Mode ............................................................D-29
(2) Accessing the “ADJUST” Menu .......................................................D-29
(3) Printing a Test Pattern .....................................................................D-29
(4) Margin Adjustment (Leading Edge/Trailing Edge/Both Sides) .........D-30
(5) Printer’s Main Scanning Registration Adjustment ............................D-31
(6) Printer’s Sub-Scanning Registration Adjustment .............................D-32
(7) Scanner’s Main Scanning Zoom Ratio Adjustment ..........................D-33
(8) Scanner’s Sub-Scanning Zoom Ratio Adjustment ...........................D-35
(9) Scanner’s Main Scanning Registration Adjustment .........................D-37
(10) Scanner’s Sub-Scanning Registration Adjustment ..........................D-39
5. MISCELLANEOUS ...........................................................................................D-40
5-1. Removal of the Mechanical Counter (Option) ..........................................D-40
5-2. Updating the Firmware .............................................................................D-41
(1) Installing the GDI Printer/TWAIN Driver Using Plug and Play .........D-41
5-3. Procedure for Updating the GDI Firmware ...............................................D-43
iii
5-4. Remedy for a Failed Updating of the Firmware ....................................... D-45
5-5. Moving the EEPROM .............................................................................. D-47
CONTROL PANEL/SERVICE MODE DESCRIPTIONS
1. CONTROL PANEL DESCRIPTIONS .............................................................. S-1
1-1. Names of Control Panel Parts and Their Functions ................................ S-1
2. FUNCTIONS OF SWITCHES AND PARTS ON PWBs ................................... S-3
2-1. Circuit Board Locations ........................................................................... S-3
2-2. PWB-P (Controller/Mechanical Control Board) ....................................... S-3
2-3. PWB-IF (Interface Board) ........................................................................ S-4
3. UTILITY MODE ............................................................................................... S-5
3-1. Utility Mode Function Tree ...................................................................... S-5
3-2. Utility Mode Setting Procedure ................................................................ S-6
(1) Machine Setting ............................................................................... S-6
(2) Paper Source Setting ...................................................................... S-8
(3) Copy Setting .................................................................................... S-8
4. SERVICE MODE ............................................................................................. S-9
4-1. Service Mode Function Tree ................................................................... S-9
4-2. Service Mode Setting Procedure ............................................................. S-11
4-3. Service Mode Functions .......................................................................... S-12
(1) Service's Choice .............................................................................. S-12
(2) Adjust ............................................................................................ S-14
(3) Counter ............................................................................................ S-17
(4) Display ............................................................................................ S-19
(5) Function ........................................................................................... S-19
(6) Fixed Zoom Change ........................................................................ S-21
(7) Factory Test .................................................................................... S-22
(8) Clear Data ....................................................................................... S-22
5. SECURITY MODE ........................................................................................... S-23
5-1. Security Mode Function Tree .................................................................. S-23
5-2. Security Mode Setting Procedure ............................................................ S-23
(1) Security ........................................................................................... S-23
TROUBLESHOOTING
1. INTRODUCTION ............................................................................................. T-1
1-1. Electric Components Check Procedures ................................................. T-1
(1) Sensors ........................................................................................... T-1
(2) Switches .......................................................................................... T-2
(3) Solenoids ......................................................................................... T-2
(4) Motors ............................................................................................ T-3
1-2. Overall Control Configuration .................................................................. T-5
2. PAPER MISFEED ........................................................................................... T-6
2-1. Initial Check Items ................................................................................... T-6
2-2. Paper Misfeed Displays ........................................................................... T-7
2-3. Locations of Misfeed Detection Sensors ................................................. T-8
2-4. Misfeed Detection Timing and Troubleshooting Procedures ................... T-9
(1) Paper Take-Up/Transport Misfeed .................................................. T-9
(2) Fusing/Exit Misfeed ......................................................................... T-10
iv
3. MALFUNCTIONS/WARNING ..........................................................................T-11
3-1. List of Malfunctions ..................................................................................T-11
3-2. Malfunction Detection Timing and Troubleshooting Procedures ..............T-14
(1) C0045: Fuser fan motor error ..........................................................T-14
(2) C0210: H.V. abnormal .....................................................................T-15
(3) C0500: Fuser warm up error ............................................................T-16
(4) C0510: Fuser temperature low ........................................................T-17
(5) C0520: Fuser overheat ....................................................................T-18
(6) C0650: Scanner home sensor error .................................................T-18
(7) C1200: ASIC memory abnormal ......................................................T-19
(8) C1300: Polygon mirror motor error ..................................................T-19
(9) C133B: Communication with option error ........................................T-20
(10) C133D: ROM checksum error ..........................................................T-20
(11) C13F0: Laser error ...........................................................................T-21
(12) C1468: EEPROM error ....................................................................T-21
(13) C14A3: IR lamp malfunction ............................................................T-22
4. MALFUNCTIONS RELATED TO POWER SUPPLY .......................................T-23
4-1. Power is not Turned ON. ..........................................................................T-23
5. IMAGE QUALITY PROBLEMS ........................................................................T-24
5-1. Troubleshooting Image Quality Problems ................................................T-24
5-2. Initial Checks ............................................................................................T-24
5-3. Troubleshooting for Specific Image Quality Problems .............................T-25
(1) Image reading system: Blank or black prints ...................................T-26
(2) Image reading system: Low image density ......................................T-27
(3) Image reading system: Foggy background or rough image .............T-28
(4) Image reading system: Black streaks or bands ...............................T-29
(5) Image reading system: Black spots .................................................T-30
(6) Image reading system: Blank streaks or bands ...............................T-31
(7) Image reading system: Uneven image ............................................T-32
(8) Printer system: Blank or black prints ................................................T-33
(9) Printer system: Blank spots .............................................................T-34
(10) Printer system: Smears on back ......................................................T-34
(11) Printer system: Low image density ..................................................T-35
(12) Printer system: Foggy background ..................................................T-36
(13) Printer system: Blank streaks or bands ...........................................T-37
(14) Printer system: Black streaks or bands ............................................T-38
(15) Printer system: Offset image ............................................................T-38
(16) Printer system: Uneven image .........................................................T-39
v
GENERAL
1. SPECIFICATIONS
(1) Main Unit
Desktop
Ty p e
Original scanning system
Photoconductor type
Copying system
Resolution
Paper feed-in system
Exposure system
Developing system
Drum-charging system
Image transfer system
Paper separation system
Fusing system
Max. Original size
Copy Medium
Paper source Tray1 Tray2 Bypass Tray
Plain paper (60 to 90 g/m
Recycled paper (60 to 90 g/m
Ty p e
Dimension
Special paper (91 to 163 g/m
Maximum (width × length) 216×356 mm
Minimum (width × length) 105×148 mm 105×148 mm
:
Scanning in main scanning direction with a 3-line color CCD
:
sensor, and scanning in sub-scanning direction with unit
scanning and sheet feed-through system
OPC (Organic Photoconductor)
:
Electrostatic dry Powdered image transfer to plain paper with
:
laser
600 dpi × 600 dpi, 600 dpi × 300 dpi
:
2-Way system (Tray1 and Bypass Tray)
:
*3-Way system is possible if optional PF-125 (Tray2) is
installed.
Unit scanning slit exposure
:
FMT single component developing
:
Rotating brush with pre-charge film
:
Roller transfer
:
Curvature separation + Charge Neutralizing needle
:
Heat roller
:
Up to Legal size
:
(16 to 24 lb.)
(16 to 24 lb.)
(24 to 43 lb.)
Transparencies ❍ – ❍
Label sheets ❍ – ❍
Envelopes ❍ – ❍
2
)
2
2
❍❍❍
)
❍❍❍
)
❍ – ❍
A4 L, Letter L
216×356 mm
NOTE
The dimension for Tray2 is fixed at A4L or Letter L.
G-1
Continuous copy speed
(copies/min.)
Continuous print speed
(sheets/min.)
Warm-up time
First print time
First copy time
12 copies/minute (at full size and 600 dpi × 300 dpi, with
:
ADF)
More than 16 sheets/minute (with plain A4 L or Letter L
:
paper)
Less than 25 seconds (at a room temperature of 23 °C and
:
at the rated voltage)
16 seconds or less (at full size and 600 dpi × 300 dpi, with
:
plain A4 L or Letter L paper)
13 seconds or less (at full size and 600 dpi × 300 dpi, with
:
plain A4 L or Letter L paper)
*If the Start key is pressed more than 3 seconds after opening and closing the Original Cover or Auto Document Feeder
after the engine has warmed up
G-2
Zoom Ratios
Metric Size English Size
Full size ×1.00 ×1.00
Enlargement
Fixed
Reduction
Var iabl e ×0.50 to ×2.00 (in ×0.01 increments)
Lens
Exposure Lamp
Fusing temperature
Power /Current Consumption (main unit only)
Voltage Maximum power consumption
110 V, 120-127 V 700, 770-880 W
220-240 V 740-830 W
Power source : 110 V, 120V-127 V, 220-240 V 50/60 Hz
:
Through lens (F=5.0, f=27.195)
:
Cold Cathode Florescent Lamp
:
200 °C
×1.15
×1.41
×2.00
×0.81
×0.70
×0.50
×1.29
×1.54
×2.00
×0.78
×0.64
×0.50
Main unit dimensions
(including Original
Cover)
Main unit weight
(2) GDI Printer Function
RAM
Interfaces
Printer Language
Fonts
Supported Operating
Systems
Web Browser
::Width....508 mm (20 inches)
Depth....608 mm (24 inches)
Height...408 mm (16 inches)
14.9 kg (32-3/4 lb.)
Share with copier.
:
IEEE 1284 (Parallel), USB Revision 1.1
:
(except for Windows 95 and Windows NT)
GDI
:
Windows
:
Windows XP (SP1 or later)/Windows 2000 (SP3 or later)/
:
Windows NT Workstation Version 4.0 (SP6a or later)/Windows Me/Windows 98 (SP1)/Windows 98 Second Edition/
Windows 95 OSR
Internet Explorer 4.0 or later
:
G-3
2. PRECAUTIONS FOR INSTALLATION
2-1. Installation Site
To ensure utmost safety and avoid breakdown, the printer should NOT be used in a place:
• Where it will be subjected to extremely high or low temperature or humidity.
• Where it will be subjected to sudden fluctuations in either temperature or humidity.
• Which is exposed to direct sunlight.
• Which is in the direct air stream of an air conditioner, heater, or ventilator.
• Which has poor ventilation or is dusty.
• Which does not have a stable, level floor or where it will receive undue vibration.
• Which is near any kind of heating device.
• Which is near volatile flammables (thinner, gasoline, etc.).
• Where it may be splashed with water and electric leakage is likely to occur.
• Which puts the operator in the direct stream of exhaust from the printer.
• Where ammonia gas might be generated.
2-2. Power Source
• If any other electrical equipment is sourced from the same power outlet, make sure that
the capacity of the outlet is not exceeded.
• Use a power source with little voltage fluctuation.
• Never connect by means of a multiple socket any other appliances or machines to the
outlet being used for the printer.
• Ensure that the printer does not ride on the power cord or communications cable of other
electric equipment, and that it does not become wedged into or underneath the mechanism.
• Make the following checks at frequent intervals:
✽ Is the power plug abnormally hot?
✽ Are there any cracks or scrapes in the cord?
✽ Has the power plug been inserted fully into the outlet?
✽ Does something, including the printer itself, ride on the power cord?
Use an outlet with a capacity of 110/120/127 V, or 220-240 V.
G-4
3. PRECAUTIONS FOR USE
3-1. To Ensure the Printer is Used in an Optimum Condition
• Never place a heavy object on the printer or subject the printer to shocks.
• Insert the power plug all the way into the outlet.
• Do not attempt to remove any panel or cover that is secured while the printer is in a print
cycle.
• Do not turn OFF the printer while it is in a print cycle.
• Provide good ventilation if the printer is to be used for a long time in a narrow room.
• Never use flammable sprays near the printer.
• If the printer becomes inordinately hot or produces abnormal noise, immediately turn it
OFF and unplug it.
• Do not turn ON the power switch at the same time that you plug the power cord into the
outlet.
• When unplugging the power cord, do not pull on the cord; hold the plug and pull it out.
• Do not bring any magnetized object near the printer.
• Do not place a vase or vessel containing water on the printer.
• Be sure to turn OFF the power switch at the end of the workday or upon power failure.
• Use care not to drop paper clips, staples, or other small pieces of metal into the printer.
3-2. Operating Environment
The operating environmental requirements of the printer are as follows.
• Temperature: 10 to 30 °C
• Humidity: 15 to 85 %
• Rate of temperature change: 10 °C/h
• Rate of humidity change: 20 %Rh/h
3-3. Power Requirements
The power source voltage requirements are as follows.
• Voltage fluctuation: AC110 V -10 %, AC127 V +6 % (Function)
AC220-240 V ± 10 % (Function)
AC110 V -15 %, AC127 V +6 % (Paper Feeding)
AC220-240 V +10 %, -15 % (Paper Feeding)
• Frequency fluctuation: 50/60 Hz ± 3 Hz
G-5
4. HANDLING OF THE CONSUMABLES
Before using any consumables, always read the label on its container carefully.
• Paper can easily damp. To prevent absorption of moisture, store paper in a place with little moisture.
• Keep consumables out of the reach of children.
• Do not touch the PC Drum with bare hands.
• The same sized paper is of two kinds, short grain and long grain. Short grain paper
should only be fed through the printer crosswise, while long grain paper should only be
fed lengthwise. The wrapper of the paper is properly marked.
• If your hands become soiled with toner, wash them with soap and water.
• Do not throw away any used consumables. They are to be collected.
• Do not burn, bury in the ground, or throw into the water any consumables.
• Do not store consumables in a place which:
✽ Is hot and humid.
✽ Is subject to direct sunlight.
✽ Has an open flame nearby.
5. MISCELLANEOUS PRECAUTIONS
Use the following precautions when performing service jobs for a printer that uses a laser.
• When a service job needs to be performed in the laser beam path, such as when working
around the Print Head Unit or PC Drum, be sure first to unplug the power cord of the
printer from the outlet.
• If the service job requires that the power cord be left plugged in, observe the following
precautions:
1. Take off your watch, ring, and any other reflective object and wear laser protective gog-
gles.
2. Keep users away from the job site.
3. Do not bring a highly reflective tool into the laser beam path during the service job.
G-6
6. PARTS IDENTIFICATION
1
6
5
4
2
3
4980G001AA
1. Automatic Document Feeder AF-11
2. Mechanical Counter
3. Expansion memory 32-5 (32 MB)
4. Paper Feed Cassette PF-125
5. Main Unit D 16G
6. Original Cover OC-7
G-7
MECHANICAL/
ELECTRICAL
1. COMPONENTS LAYOUT
1
8
7
6
1: IR Unit 5: Paper Take-Up Roller
2: Exit Roller 6: Toner Cartridge
3: Fusing Unit 7: Drum Cartridge
4: Image Transfer Section 8: Print Head (PH) Unit
2
3
4
5
4980M004AA
M-1
2. COPY PROCESS
4980M018AC
1. PC Drum
• A photoconductive layer is formed on an aluminum tube and an electrostatic latent image
is formed on this photoconductive layer.
2. PC Drum Charging
• Deposits a negative DC charge across the entire surface of the PC Drum.
3. Photoelectric Conversion
• The CCD Sensor converts the image data represented by light reflected off the original to
a corresponding analog electric signal which, in turn, is output to the IR image processing section.
4. IR Image Processing
• The electric signal is converted to an 8-bit digital image signal (A/D conversion) which, in
turn, goes through appropriate correction processes before being output to the PH image
processing section.
5. PH Image Processing
• After going through correction processes, the digital image signal is converted to a corresponding electric signal (D/A conversion), based on which control is provided for turning
ON or OFF the laser.
6. Laser Exposure
• The laser beam strikes the surface of the PC Drum, forming an electrostatic latent image.
7. Developing
• Toner negatively charged in the Developer Mixing Chamber is attracted onto the electrostatic latent image, changing it to a visible, developed image.
• A developing bias voltage (Vb) is applied to the Sleeve Roller to prevent toner from being
attracted onto those areas of the PC Drum that correspond to the background areas of
the original.
M-2
8. Paper Feed
• Paper is fed from Tray 1.
9. Bypass Paper Feed
• Paper is fed from the Multiple Bypass Tray.
10. Image Transfer
• A DC positive charge is applied to the Image Transfer Roller to transfer the visible image
on the surface of the PC Drum onto the paper.
11. Paper Separation
• The Charge Neutralizing Plate neutralizes any charge left on the paper.
12. Recovery
• The residual toner on the surface of the PC Drum is temporarily recovered and is made
into even finer particles during the print end sequence before being recovered at the
Developing Unit.
13. Paper Transport
• The paper is transported onto the Fusing Unit.
14. Fusing
• The developed image is permanently fused to the paper by a combination of heat and
pressure applied by the Right and Left Fusing Rollers.
15. Paper Exit
• The paper is fed out onto the Exit Tray.
M-3
3. PAPER PATH
Exit Tray
Fusing Roller
Multiple Bypass Tray
Tray 1
Exit Roller
Paper Take-Up Roll
• The system employs a two-way paper supply system, in which paper is fed from either
Tray 1 or the Multiple Bypass Tray.
• When the optional Paper Feed Cassette is mounted, the system offers a three-way
paper supply system.
• The paper taken up and fed in by the Paper Take-Up Roll is transported through the
printer by the Image Transfer Roller, Fusing Roller, and Exit Roller and fed out of the
printer face down onto the Exit Tray.
Image Transfer Roller
4980M005AA
M-4
4. DRIVE SYSTEM
6
5
4
1
2
3
4980M010AA
1: Scanner Unit 4: Main Motor
2: Image Transfer Roller 5: Scanner Motor
3: Paper Take-up Roller 6: Fusing Roller
M-5
5. OPERATING SEQUENCE
5-1. Print Start Sequence
(1) When the pre-start control is not provided
Start key
ON
Polygon
Motor
Main
Motor
Paper TakeUp Solenoid
/S1
Drum Charge
Output
Exposure
Output
Developing Output
Image
Tr an s f er
Output
Drum charge DC
Charge
Reverse bias
Negative output
Drum charge DC
Charge
Negative output
Reverse bias
ON
Unexposed area
output
4980M013AA
M-6
(2) When the pre-start control is provided
Start key
ON
Polygon
Motor
Main
Motor
Paper Take-Up
Solenoid
/S1
Drum Charge
Output
Drum charge DC Drum charge DC
Exposure
Output
Developing
Output
Charge
ON
Reverse bias
Image
Tr an s f er
Output
5-2. Print End Sequence
ON
PS3
Polygon
Motor
Main
Motor
Drum
Charge
Output
Laser
Output
Developing
Output
Image
Transfer
Output
ON
ON
Unexposed area illumination
ON
Substantially entire
surface exposure
Positive
Reverse bias
Negative output
DC
Unexposed area illumination
Negative
Charge
Negative
Unexposed area
output
4980M017AB
AC
4980M014AA
M-7
6. IC (IMAGING CARTRIDGE) SECTION
6-1. Overview
• The illustration below shows the construction of the Toner Cartridge and the Developing
Unit.
• This printer adopts the single-component FMT, or Fine Micro Toning, developing system.
• The Toner Agitating Screw conveys toner in the Toner Cartridge onto the Toner Supply
Roller.
• The Toner Supply Roller transports the toner to the Sleeve Roller. The Resin Sleeve of
the Sleeve Roller carries the toner onto the PC Drum to form a toner image on the latent
image formed on the surface of the PC Drum.
Imaging Cartridge (T/C + D/C)
T/C
Toner Hopper
Toner Agitating Screw
1st Toner Blade
Toner Supply Roller
2nd Toner Blade
4136M529AA
PC Drum
Sleeve Roller
4136M504AA
Resin Sleeve
Bias Seal
M-8
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